Angular conduit connection and method of making same



B. c. ROOT 1,727,413

ANGULAR CONDUIT CONNECTION AND METHOD 0F IAKING SAME Sept. 10, 1929.

Filed June '7, 1926 Patented Sept. 10, 1929.

UNETEDW STATES Peteur orrics.

BERTVJELLC. ROOT, OF BERLIN, NEW HALMPSHltRE,r .ASSGNOR TO BROWN COMPANY,

OF BERLIN, HAMIESHIRE,` A CORPORATON 0F HINE.

ANGULAR CONBIT CONN1i`i(}"lI0|5'k AND METHOD OF MAKING SAME.

Application flied June 7, 192e. serial no. 114,268.

This invention has relation to angular conduit connections and to a method ot making' the same, and morespecilically has relation to angular connections between conduits made of librous material saturated with` a thern'ioplastic waterproofing" compound. Among other uses, such conduits find ezttensive application as fluid conductors and as housings for electric cables or wires.

A librous conduit or tube such as herein contemplated may be made by winding a web of cellulose pulp (e. g., chemical, mechanical, or mixed pulp) 'from a Fourdrinier wire or other web-formingmechanism, on a mandrel,

until a tubular wall of the desired thickness has been built up, whereupon the conduit is stripped from 'the mandrel and is thoroughly dried. The `individual convolutions or layers ot the wall of a conduit thus formed are tion provides a'siinple and el'licient method of making; an angular conduit connection which is durable and well-appearing andwhich is made with iibrous conduit material so utilined as to constitute in effect an integral construction.

.in accordance with the method of this invention, the conduits are angularly connected before being subjected to a waterproofing; treatment. A suitable opening is lirst cut into the wall ol the m'ain conduit or cross-member ott the "l", and the end of the branch or conduit to be singularly connected thereto is cut to lit the cut wall. A yoke for holding` the branch in place is then as` sembled with the branch and the main conduit, C 'fter which the parts are secured in place and are treated with the waterproofing compound.

The invention may best be understood from the following more detailed description tliereotl when considered in conjunction with the accompanying drawings, wherein Figure 1 represents in front elevation an angular connection formed by the methodr ot the present invention.

Figure 2 is a section on the line22 otl Figure 1.

. Figure 3 represents a front elevation of the everal parts ot the connection, readyr for assembly. y

Figure 11 illustrates in perspective ka meinier tor holding-the branch in place, the

dotted line indicating` the outline of a yoke ,serving for a rectangular lead-oli. An end of the conduit 2 is cut in the form oil' a V, complemental with the V cut in the wall of the conduit 1.1 Preferably, the contacting A"surfaces of the conduits are treated with an adhesive, such as glue, to hold them temporarily together when they h ve been assembled.

Theconduits are maintained in assembled relation by a yoke 4, comprising` a ring portiene?` which engages about theconduit l, and a collar tb'protruding theretrom, which serves as a sookettor the reception of the conduit 2. As shown in Figure 4, the yoke t is formed troni a conduit section cut to the forni of a forked collar y5, shown in dotted outline. vThe forked collar comprises f the collar portion e", from which project the elements 5;, spa/ced Opposite to one another a fibrous structure has been penetrated and reduced to a sufficiently pulpous condition to undergo formation without breakage. With the conduit 2 temporarily fixed in position, the collar 4b is inserted over the Conduit 2 and slipped down into place, with the elements 5a embracing the conduit 1. These elements are then wrapped tightly about the conduit 1, the end portion of one element overlapping the end portion of the other to ,1. e., from a tube which has been removed from the 'machine before it has been dried. The yoke l may then be formed directly therefrom. Furthermore, in place of forming the yoke et about the temporarily fixed conduits, it may be moulded independently from the forked collar 5 on a mandrel of a size corresponding to the sizeof the conduit 1 to the form shown infFigure 3, and Ithe ring portion La slipped in place over the conduit 1 so that the conduit 2 may then be inserted into the collar 4 to engage in the V opening cutrin the conduit 1.

After assembly, ythe pieces are permanently fastened together, preferably by Wooden pegs. raiiged in rows are driven through the collar l into the conduit E2 and through the ring portion 4a into the conduit 1. 'Ihev pegs may be similar to those commonly employed in pegging shoes. The yoke A thus serves to hold the conduit securely together, 'Y

drives the pegs,k into they material, may be employed.

The assembled and fastened parts are then treated with a thermoplastic waterproofing material, e. g pitch, in a manner to effect a saturation of the fibrous material. his treatment further results in an intimate bonding of the parts and the resultant joint is solid, well-appearing, and is not liable to breakage or leakage.

IVhile I have described this invention as embodied in a T connection, it should be understood that this is illustrative only and that connections of other angularity may As shown in Figure 1, pegs 6 ar-V be similarly formed. Furthermore, it should be understood that the invention is susceptible of various changes and modifications without departing from its spirit or scope as defined by the appended claims.

I do not herein claim broadly a method of joining fibrous conduits or conduit parts, which comprises pegging the conduits or conduit parts together and then saturating the same with waterproofing material, as

fjoint, comprising a conduit having an opening in its wall, a conduit angularly fitted in said opening', and a fibrous member engagingk and pegged to both said conduits, said `joint being saturated with a thermoplastic waterproofing compound which also serves to bond the parts together. f

3. A non-leaking connection between tubular fibrous conduits, one of said conduits communicating angularly with the other conduit, including a fibrous yoke comprisingy a ring engaging about one conduit and a4 collar in which said angular conduit is fitted, and pegs fastening the yoke to both said conduits, the entire connection being saturated with waterproofing compound,

which also serves to bond together the parts.

4L. A method of angularly connecting tubular fibrous conduits, which comprises forming an opening in the wall of one conduit, fitting andinserting t-he end of the other conduit angularly in said opening, slipping a. forked fibrous collar over said angular conduit, wrapping the forks projecting from said collar about the wall of said first-mentioned conduit, pegging thecollar to both said conduits, and saturating the entire connection with thermoplastic waterproofing compound.

In testimony whereof I have affixed my signature.

BERTIVELL C. ROOT. 

